258978860

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{1849849}}^1$

素因数の和:1849865

約数の個数: 24

約数和(自身を含む): 621549600

約数和(自身を除く): 362570740

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 1849849, 3699698, 7399396, 9249245, 12948943, 18498490, 25897886, 36996980, 51795772, 64744715, 129489430, 258978860]

約数ペア:

[(1, 258978860), (2, 129489430), (4, 64744715), (5, 51795772), (7, 36996980), (10, 25897886), (14, 18498490), (20, 12948943), (28, 9249245), (35, 7399396), (70, 3699698), (140, 1849849)]